The evolution of post-communist countries: An interpretation from the perspective of cooperation (with D. Ialnazov), paper prepared for the conference in Paris, November 2009. (in Bulgarian), (in English)

Lending of First Versus Lending of Last Resort: The Bulgarian Financial Crisis of 1996-1997, (with M. Berlemann), Comparative Economic Studies, 28/7/2003; Dresden DP Series in Economics, Dresden University of Technology, No 11, 2003